DOE Comparing Measures of Average Color Fidelity – IES TM-30 Color Metric to Widely-Used CRI

The introduction of new measures of color rendition has stirred debate within the lighting industry on the relative merits of the tools, as well as the amount of difference between the new tools and prior tools, such as CIE Ra.

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TM-30 BASICS with Michael Royer of PNNL

– IES TM-30-15 is a new system of several related measures and graphics that can be used together to effectively evaluate and communicate a light source’s color rendering properties. The development of the method involved synthesizing multiple related research efforts

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Posted in Product Showcases


New DOE Resources on Understanding IES TM-30

Created by an Illuminating Engineering Society (IES) task group to address the widely acknowledged limitations of CRI, which is simpler to use but less accurate, TM-30 encompasses several individual measures and graphics that complement one another and, together, provide a

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Posted in Industry News


Battle Lines Drawn Over Color Rendering Method

The lighting industry appeared to be gearing up for another of its periodic format wars as battle lines were drawn this week over a proposed replacement for the Color Rendering Index. The Illuminating Engineering Society in the US has unveiled

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